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Properties of Sol-Gel Materials Synthesized from Colloidal Silica and Alkoxy Silanes  

Kang Dong-Pil (Advanced Materials and Application Research laboratory Korea Electrotechnology Research Institute)
Park Hoy-Yul (Advanced Materials and Application Research laboratory Korea Electrotechnology Research Institute)
Ahn Myeong-Sang (Advanced Materials and Application Research laboratory Korea Electrotechnology Research Institute)
Myung In-Hye (Advanced Materials and Application Research laboratory Korea Electrotechnology Research Institute)
Lee Tae-Ju (Advanced Materials and Application Research laboratory Korea Electrotechnology Research Institute)
Choi Jae-Hoon (Department of forest Products, College of Agriculture and Life Science, Seoul National University)
Kim Hyun-Joong (Department of forest Products, College of Agriculture and Life Science, Seoul National University)
Publication Information
Polymer(Korea) / v.29, no.3, 2005 , pp. 242-247 More about this Journal
Abstract
Two kinds of colloidal silica(CS)/silane sol solutions were prepared in variation with synthesizing parameters such as kinds of CS, ratio of CS to silane and reaction time. Such sol solutions were obtained from 1034A Cs/methyl-trimethoxysilane(MTMS) and HSA CS/MTMS solutions. In the case of 1034A CS/MTMS CS/silane sol, coating film had high contact angle and more enhanced flat surface than those in the case of HSA CS/MTMS sol. In the case of thermal stability, thermal dissociation of 1034A CS/MTMS sol did not occur up to $550^{circ}$. The thickness of coating film obtained from 1034A CS/MTMS sol increased with increasing the amount of MTMS. The hardness of coating films obtained from 1034A CS/MTMS sol decreased with increasing the amount of MTMS. Surface free energy of CS/silane sol-gel coating film decreased with increasing amount of MTMS.
Keywords
sol-gel; colloidal silica; tetramethoxysilane; methyltrimethoxysilane; coating film;
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